Ferulic Acid Dehydrodimers
Diferulic acids (also known as dehydrodiferulic acids) are organic compounds that have the general chemical formula C20H18O8, they are formed by dimerisation of ferulic acid. Curcumin and curcuminoids, though having a structure resembling diferulic acids', are not formed that way but through a condensation process. Just as ferulic acid is not the proper IUPAC name, the diferulic acids also tend to have trivial names that are more commonly used than the correct IUPAC name. Diferulic acids are found in plant cell walls, particularly those of grasses. Structures There are currently nine known structures for diferulic acids. They are usually named after the positions on each molecule that form the bond between them. Included in the group are 8,5'-DiFA (DC) (or decarboxylated form) and 8,8'-DiFA (THF) (or tetrahydrofuran form), which are not true diferulic acids, but probably have a similar biological function. The 8,5'-DiFA (DC) lost CO2 during its formation, the 8,8'-DiFA (THF ...
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